src/uisupport/bufferviewoverlayfilter.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-09 by the Quassel Project                          *
   3  *   devel@quassel-irc.org                                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) version 3.                                           *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
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  20
  21 #include "bufferviewoverlayfilter.h"
  22
  23 #include "bufferviewoverlay.h"
  24 #include "networkmodel.h"
  25 #include "types.h"
  26
  27 BufferViewOverlayFilter::BufferViewOverlayFilter(QAbstractItemModel *model, BufferViewOverlay *overlay)
  28   : QSortFilterProxyModel(model),
  29     _overlay(0)
  30 {
  31   setOverlay(overlay);
  32   setSourceModel(model);
  33
  34   setDynamicSortFilter(true);
  35 }
  36
  37 void BufferViewOverlayFilter::setOverlay(BufferViewOverlay *overlay) {
  38   if(_overlay == overlay)
  39     return;
  40
  41   if(_overlay) {
  42     disconnect(_overlay, 0, this, 0);
  43   }
  44
  45   _overlay = overlay;
  46
  47   if(!overlay) {
  48     invalidate();
  49     return;
  50   }
  51
  52   connect(overlay, SIGNAL(destroyed()), this, SLOT(overlayDestroyed()));
  53   connect(overlay, SIGNAL(hasChanged()), this, SLOT(invalidate()));
  54   invalidate();
  55 }
  56
  57 void BufferViewOverlayFilter::overlayDestroyed() {
  58   setOverlay(0);
  59 }
  60
  61 bool BufferViewOverlayFilter::filterAcceptsRow(int source_row, const QModelIndex &source_parent) const {
  62   if(!_overlay)
  63     return false;
  64
  65   QModelIndex source_bufferIndex = sourceModel()->index(source_row, 0, source_parent);
  66
  67   if(!source_bufferIndex.isValid()) {
  68     qWarning() << "filterAcceptsRow has been called with an invalid Child";
  69     return false;
  70   }
  71
  72   NetworkModel::ItemType itemType = (NetworkModel::ItemType)sourceModel()->data(source_bufferIndex, NetworkModel::ItemTypeRole).toInt();
  73
  74   NetworkId networkId = sourceModel()->data(source_bufferIndex, NetworkModel::NetworkIdRole).value<NetworkId>();
  75   if(!_overlay->networkIds().contains(networkId) && ! _overlay->allNetworks()) {
  76     return false;
  77   } else if(itemType == NetworkModel::NetworkItemType) {
  78     // network items don't need further checks.
  79     return true;
  80   }
  81
  82   int activityLevel = sourceModel()->data(source_bufferIndex, NetworkModel::BufferActivityRole).toInt();
  83   if(_overlay->minimumActivity() > activityLevel)
  84     return false;
  85
  86   bool isActive = sourceModel()->data(source_bufferIndex, NetworkModel::ItemActiveRole).toBool();
  87   if(_overlay->hideInactiveBuffers() && !isActive && activityLevel <= BufferInfo::OtherActivity)
  88     return false;
  89
  90   int bufferType = sourceModel()->data(source_bufferIndex, NetworkModel::BufferTypeRole).toInt();
  91   if(!(_overlay->allowedBufferTypes() & bufferType))
  92     return false;
  93
  94   BufferId bufferId = sourceModel()->data(source_bufferIndex, NetworkModel::BufferIdRole).value<BufferId>();
  95   Q_ASSERT(bufferId.isValid());
  96
  97   if(_overlay->bufferIds().contains(bufferId))
  98     return true;
  99
 100   if(_overlay->tempRemovedBufferIds().contains(bufferId))
 101     return activityLevel > BufferInfo::OtherActivity;
 102
 103   if(_overlay->removedBufferIds().contains(bufferId))
 104     return false;
 105
 106   // the buffer is not known to us
 107   return _overlay->addBuffersAutomatically();
 108 }
 109